Caldera SN-5421 Pro 8TB PCIe 4.0 NVMe M.2 2280 SSD
SSDs · Caldera · SKU SN5421-PRO · Released 2021 · Updated 2026-10-22
Key facts
| Benchmark index | 13,586 (SSDs scale) |
|---|---|
| Category rank | #17,071 |
| Street price | $579 |
| Power | 6 W (active) |
| Performance per dollar | 23.46 |
| Released | 2021 |
Specifications
| Brand | Caldera |
|---|---|
| Model | Caldera SN-5421 Pro |
| Capacity | 8 TB |
| Form factor | M.2 2280 |
| Interface | PCIe 4.0 x4, NVMe 2.0 |
| Sequential read | 7,400 MB/s |
| Sequential write | 6,000 MB/s |
| Random 4K read | 1,090K IOPS |
| NAND | 3D TLC, 238-layer |
| Cache | DDR4 DRAM, 8 GB |
| Endurance | 4,800 TBW (0.33 DWPD) |
| Warranty | 5 years |
| Heatsink | Heatsink edition available |
Related guides
NVMe SSDs ExplainedM.2 SSD Sizes and KeysSSD Endurance ExplainedDRAM vs DRAM-less SSDsPCIe 4.0 vs PCIe 5.0
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| Altrix SN-3448 Plus 2TB PCIe 4.0 NVMe M.2 2230 SSD | 11,340 | $269 | Compare |
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Cite this page: Hardware Spec Index, “Caldera SN-5421 Pro 8TB PCIe 4.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/97837272 (accessed 2026-10-22).